Programming Concepts
Overview
Every program, however large, is built from a small set of ideas: store a value, get input, produce output, make a choice, repeat something, and break the work into named pieces. Learn these building blocks once and you can read and write programs in any language, because the same concepts hide under different words in Python, Java or pseudocode.
In this lesson you will declare variables and constants, use the core data types, master sequence, selection and iteration, count and total, handle strings, nest statements inside one another, and split a program into procedures and functions with parameters. You will write all of it in the Cambridge pseudocode style used in the exam.
Objectives
- 1 Declare and use variables and constants
- 2 Understand and use basic data types
- 3 Understand and use input and output
- 4 (a) Understand and use the concept of sequence (b) Understand and use the concept of selection (c) Understand and use the concept of iteration (d) Understand and use the concepts of totalling and counting (e) Understand and use the concept of string handling
- 5 Understand and use nested statements
- 6 (a) Understand what is meant by procedures, functions and parameters (b) Define and use procedures and functions, with or without parameters (c) Understand and use local and global variables
- 7 Understand and use library routines
- 8 Understand how to create a maintainable program
Lesson Note
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Lesson Evaluation
Congratulations on completing the lesson on Programming Concepts. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- Which loop always runs its body at least once? A. WHILE B. FOR C. REPEAT D. IF Answer: C
- Which data type stores only TRUE or FALSE? A. INTEGER B. STRING C. BOOLEAN D. CHAR Answer: C
- What does a function do that a procedure does not? A. take parameters B. return a value C. use variables D. run in sequence Answer: B
- SUBSTRING("COMPUTER", 1, 4) in Cambridge pseudocode returns: A. COMP B. OMPU C. PUTE D. UTER Answer: A
- A variable that can be used anywhere in a program is described as: A. local B. constant C. global D. nested Answer: C
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Recommended Books
Practice Mock Questions
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